package chapter05.Example3;

public class Example3 {
    public static void main(String[] args) {
        String str = "abcd";
        System.out.println("将字符串转换为字符数组后的结果：");
        char[] charArray = str.toCharArray();
        for (int i = 0; i < charArray.length;i++){
            if (i != charArray.length - 1) {
                System.out.print(charArray[i] + ",");
            }else{
                System.out.println(charArray[i]);
            }
        }
        System.out.println("将int值转换为String类型之后的结果：" + String.valueOf(12));
        System.out.println("将字符串转换成大写字母之后的结果：" + str.toUpperCase());
        System.out.println("将字符串转化成小写字母之后的结果：" + str.toLowerCase());
    }
}
